Results 71 to 80 of about 25,769 (204)

Supporting Passive Users in mmWave Networks

GLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023
The interference from active to passive users is a well-recognized challenge in millimeter-wave (mmWave) communications. We propose a method that enables to limit the interference on passive users (whose presence may not be detected since they do not transmit) with a small penalty to the throughput of active users.
Mine Gokce Dogan, Martina Cardone, Christina Fragouli   +2 more
openaire   +2 more sources

Phase Smoothing for Mutual Coupling Mitigation in Multifunctional Metasurfaces Designed with Diffractive Neural Networks

Advanced Optical Materials, Volume 14, Issue 1, 9 January 2026.
A diffractive neural networkdesigned metasurface operating at 86 GHz generates multiple holographic patterns by controlling the phase of subwavelength unit cells. A phase‐smoothing regularization mitigates mutual coupling, enabling accurate multifunctional wavefront shaping.
Damián Rodríguez‐Trujillo, Alicia E. Torres‐García, Mikel Aldea, Jorge Teniente, Asier Marzo‐Pérez, Miguel Beruete   +5 more
wiley   +1 more source

An Efficient Algorithm for mmWave MIMO Systems [PDF]

Symmetry, 2019
Efficient and Symmetry based precoding plays a key role in wireless communications. In order to improve the transmission performance of multi-user millimeter wave Multiple-Input Multiple-Output (MIMO) (MU-mmWave MIMO) systems, this paper proposes an analog precoding scheme for the receiver of mmWave MIMO with split sub-array hybrid analog and digital ...
Imran Khan 0006, Mohammed H. Alsharif, Mohammad Haseeb Zafar, Madini O. Alassafi, Majid Ashraf, Yongming Huang, Jeong Kim, Jin Hong Kim   +7 more
openaire   +1 more source

Phase‐Changing Vanadium Oxides for Electromagnetic Radiation Management

Small Science, Volume 6, Issue 1, January 2026.
Vanadium dioxide's reversible insulator‐to‐metal transition near room temperature enables ultrafast, broadband electromagnetic modulation from ultraviolet to radiofrequencies. With femtosecond switching speeds and cycling endurance exceeding 100 million cycles, VO2 metasurfaces achieve tuneable absorption, beam steering, and polarisation control. These
Mohammad Taha, Torben Daeneke, Sumeet Walia   +2 more
wiley   +1 more source

Economic assesment of cellular technologies deployment under carrier aggregation techniques for inter radio access technologies

Social Development & Security
Purpose: The deployment of the fifth-generation (5G) of wireless communications that was launched worldwide in 2020 is entering its final stage in some countries.
Mykola Servetnyk, Ruslan Servetnyk
doaj   +1 more source

Robust Spectral and Energy Efficiency Tradeoff for RIS‐Aided Multi‐User Communication

IET Communications, Volume 20, Issue 1, January/December 2026.
In this work, an RIS‐aided multi‐user network with imperfect CSI is investigated. Correspondingly, we focus on balancing SE and EE through the collaborative design of the base station (BS)'s precoding matrix and the RIS's phase shifts, which consider the transmit power budget and the channel uncertainties constraints.
Xiandeng He, Yilin Wang, Shun Zhang
wiley   +1 more source

Spatially Sparse Precoding in Millimeter Wave MIMO Systems

, 2013
Millimeter wave (mmWave) signals experience orders-of-magnitude more pathloss than the microwave signals currently used in most wireless applications.
Abu-Surra, Shadi, Ayach, Omar El, Heath Jr, Robert W., Pi, Zhouyue, Rajagopal, Sridhar   +4 more
core   +1 more source

Exploring Missed Spectrum Access Opportunities in Wi‐Fi 6 and 5G NR‐U Coexistence for Enhancing 6 GHz Spectrum Utilization

IET Communications, Volume 20, Issue 1, January/December 2026.
This paper investigates new radio spectrum coexistence mechanisms, leveraging the currently uninhabited 6 GHz bands and aiming for fair coexistence of Wi‐Fi 6 and 5G new radio unlicensed (NR‐U). A novel two‐stage channel contention mechanism is proposed to explore additional spectrum access opportunities which remain unrealized in the existing channel ...
Md Toufiqur Rahman, Jiang Xie, Xingya Liu   +2 more
wiley   +1 more source

A Microstrip Monopole Antenna Design for 5G Sub‐6 GHz Applications Using Deep Learning

IET Communications, Volume 20, Issue 1, January/December 2026.
This study presents the design and optimization of a SIW antenna for 5G sub‐6 GHz applications, employing a deep learning‐based surrogate model combined with Honeybee Mating Optimization (HBMO). To generate training and test datasets efficiently, LHS was used.
Berker Çolak, Mehmet Ali Belen, Farzad Kiani, Ozlem Tari, Peyman Mahouti, Oguzhan Akgol   +5 more
wiley   +1 more source

An Efficient Uplink Multi-Connectivity Scheme for 5G mmWave Control Plane Applications

, 2017
The millimeter wave (mmWave) frequencies offer the potential of orders of magnitude increases in capacity for next-generation cellular systems. However, links in mmWave networks are susceptible to blockage and may suffer from rapid variations in quality.
Giordani, Marco, Mezzavilla, Marco, Rangan, Sundeep, Zorzi, Michele   +3 more
core   +1 more source